Why can't i turn on media audio

[AC Question]

I'm trying to connect my note S5 to my Sony speaker via Bluetooth. It will only connect for a call, and I am unable to slide the media audio from the off to the on position. How can I change this so I can play my Pandora through my speaker. This has worked in the past but will not work now.

 

[B. Diddy]

Welcome to Android Central! Is the phone currently connected to some other Bluetooth device for Media Audio as well? Like a pair of headphones?